To determine the size of the future cardboard hats measuring tape measure the circumference of your head. Then, calculate the radius of the inner (smaller) circular part of the brim of a cap according to the following formula: radius = head circumference / 6.28. It will be a smaller radius. Now calculate the radius of the outer (larger) circumference of the brim of a cap, adding to the obtained radius of the inner part of the brim of a cap 25 cm (the width of the brim of a cap). It will be a larger radius.

2

Take a sheet of cardboard and draw with your compass a circle of larger radius. Then from this point draw a circle of a smaller radius. Inside the circumference of the smaller radius, draw valves with a length of approximately 3 cm, which will further help to glue the field to the top of the hat. Cut out the inner part of the brim of a cap, leaving the valves.

3

Draw a circle with a radius of 25-30 cm and cut from it the top part of the hat (about 1/4 circumference), leaving a flap for bonding the edges of the cone. Fold the top part of the hat cone and glue the valve to the other edge of the cone.

4

Lift the flaps on the inner circle of the brim of a cap and spread adhesive. Press the upper part of the hat to the brim of a cap valve. Cardboard hat ready.

Useful advice

- for the manufacture of hats, don't use corrugated cardboard (boxes from large appliances) because this Board is not flexible enough.

- the finished hat can be decorated with ribbon, Christmas tinsel or the application of colored paper